During the COVID-19 pandemic prevention and control period, a supermarket opened online sales services and can complete 1200 orders per day. Due to a sharp increase in order volume, orders have accumulated. To solve this problem, many volunteers eagerly signed up to help with order fulfillment. It is known that the supermarket had 500 accumulated unfulfilled orders on a certain day, and the probability that the next day's new orders exceed 1600 is 0.05. Each volunteer can complete 50 orders per day. To ensure that the probability of completing accumulated orders and current day orders within two days is at least 0.95, the minimum number of volunteers needed is A． 10 people B． 18 people C． 24 people D． 32 people
During the COVID-19 pandemic prevention and control period, a supermarket opened online sales services and can complete 1200 orders per day. Due to a sharp increase in order volume, orders have accumulated. To solve this problem, many volunteers eagerly signed up to help with order fulfillment. It is known that the supermarket had 500 accumulated unfulfilled orders on a certain day, and the probability that the next day's new orders exceed 1600 is 0.05. Each volunteer can complete 50 orders per day. To ensure that the probability of completing accumulated orders and current day orders within two days is at least 0.95, the minimum number of volunteers needed is
A． 10 people
B． 18 people
C． 24 people
D． 32 people